Srne MC Series MPPT Solar Charge Controller User manual

Brand: Srne

Model: MC Series MPPT Solar Charge Controller

Type: User manual

MC Series MPPT Solar Charge Controller

MC2420N10/ MC2430N10/ MC2440N10/ MC2450N10

User Manual

Model

MC2420N10

MC2430N10

MC2440N10

MC2450N10

Battery voltage

12V/24V

Max. PV open circuit voltage

92V(25℃)；100V(Lowest ambient temperature)

Charge current

20A

30A

40A

50A

Max. PV input power

260W/12V

520W/24V

400W/12V

800W/24V

520W/12V

1040W/24V

660W/12V

1320W/24V

Material Code：102949

Version: 1.03 The above information is subject to change without prior notice.

Safety Instructions

Dear users,

Thank you very much for choosing our products!

1. Applicable voltage of the controller exceeds the safety voltage for human body, so please

read the manual carefully before use and operate the controller only after safety operation

training has been completed.

2. There are no parts inside the controller that need to be maintained or repaired. The user

shall not disassemble and repair the controller.

3. Install the controller indoors to prevent exposure of components and prevent water from

entering the controller.

4. Please install the controller in a well-ventilated place to prevent the heat sink from being

overheated.

5. It is recommended to install a proper fuse or circuit breaker outside the controller.

6. Be sure to disconnect the wiring of PV array and the fuse or circuit breaker near battery

terminal before installation and wiring adjustment of the controller.

7. Check that all wiring is tight after installation to avoid danger of heat accumulation due to

poor connections.

Warning: This operation is dangerous, so before operation, safety

preparations must be made.

Caution: This operation may have a destructive effect.

Reminder: Suggestions and tips for operator.

Table of Contents

Introduction 03

1.1

Overview 03

1.2

Features 03

1.3

Appearance 04

1.4

MPPT Technology Introductions 04

1.5

Charging Stage Introductions 05

Installation 07

2.1

Installation Precautions 07

2.2

Wiring Specifications 08

2.3

Installation and Wiring 08

Product Operation and Display 10

3.1

LED Indication 10

PV array indication 10

BAT indication 11

BAT Type Indication 11

3.2. Keys Operation 11

Product Protection and System Maintenance 11

4.1

Protections 11

4.2

System Maintenance 12

Technical Parameters 13

5.1

Electrical parameters 13

5.2

Battery type default parameters 14

Conversion Efficiency Curve 15

6.1

12V System 15

6.1 24V System 15

Product Dimensions 16

01 02

Introduction

1.3 Appearance

1.1 Overview

• With industry-leading PowerCatcher MPPT technology, the MC series solar charge controller enables

maximum energy tracking for solar panel. This technology allows the controller to quickly and accurately

track the maximum power point of PV array in any environment, obtain the maximum energy of solar

panel in real time, and significantly increase energy utilization efficiency of the solar energy system.

•This product can be connected to an external LCD screen for dynamic display of operating status,

operating parameters, controller logs, control parameters, etc. The user can look up various

parameters and can modify the control parameters as needed to suit different system requirements.

• The controller provides overall electronic fault self-test and powerful electronic protection functions

which minimize

components damage due to installation error and system failure.

1.1 Features

• PowerCatcher maximum power point tracking technology allows the controller to track the maximum

power point of solar panels even in a complex environment. Compared with the traditional MPPT

tracking technology, it boasts faster response speed and higher tracking efficiency.

• A built-in maximum power point tracking (MPPT) algorithm can significantly increase energy utilization

efficiency of the photovoltaic system, which is about 15% to 20% higher than traditional PWM charging.

• It provides an active charging voltage regulation feature. At battery open circuit or lithium battery BMS

overcharge protection, the controller battery terminal will output the rated charging voltage value.

• MPPT tracking efficiency is up to 99.9%.

• Due to an advanced digital power technology, the circuit energy conversion efficiency is as high as

98%.

• Available in multiple battery types and support charging procedures of various types of batteries such

as lithium battery, colloidal battery, sealed battery, vented battery, lithium battery, etc.

• A current-limited charging mode is available. When the power of solar panel is too large and the

charging current is higher than the rated valve, the controller automatically reduces the charging power

so that the solar panel can operate at the rated charging current.

• Support automatic identification of lead-acid battery voltage.

• External LCD screen can be connected for viewing of equipment operating data and status, and

modification of controller parameters is supported.

• Built-in over-temperature protection mechanism ensures that when temperature exceeds the set value

of the device, the charging current decreases linearly with the temperature, thereby reducing the

temperature rise of controller and avoiding high temperature damage.

• Temperature compensation and automatic adjustment of charge and discharge parameters help to

improve battery life.

• Solar panel short circuit protection, battery open circuit protection and TVS lightening protection etc.

⑧ ⑨ ⑩

① ② ③ ④ ⑤ ⑥ ⑦

Figure 1-1 Controller Appearance and Ports

No.

Names

No.

Names

①

Solar panel "+" interface

⑥

Communication Interface

②

Solar panel "-" interface

⑦

Operation keys

③

Battery "-" interface

⑧

PV charging indicator

④

Battery "+" interface

⑨

Battery Capacity Indicator

⑤

External temperature sampling interface

⑩

Battery type indicator

1.4 MPPT Technology Introductions

The Maximum Power Point Tracking (MPPT for short) system is an advanced charging technology that

enables the solar panel to output more energy by adjusting operating conditions of the electrical

module. Due to non-linear characteristics of solar array, there is maximum energy output point

(maximum power point) of an array on its curve.

Traditional controller (switch charging technology and PWM charging technology) fails to maintain

battery charging at this point, and therefore the maximum energy of the solar panel cannot be obtained.

The solar charge controller with MPPT control technology, however, can track the array's maximum power

point at all time to obtain the maximum energy to charge the battery.

Take a 12V system as an example. Peak voltage (Vpp) of the solar panel is about 17V, while the battery

voltage is about 12V. In general, when the controller is charging the battery, the voltage of solar panel is

about 12V and does not fully contribute its maximum power. But, MPPT controller can overcome this

problem. It constantly adjusts the input voltage and current of the solar panel to achieve the maximum

input power.

Compared to the traditional PWM controller, the MPPT controller can provide the maximum power of the

solar panel and thus can provide a larger charging current. In general, the MPPT controller can improve

the energy utilization by 15% -20% compared with the PWM controller.

Srne MC Series MPPT Solar Charge Controller User manual

Srne MC Series MPPT Solar Charge Controller User manual

Srne MC Series MPPT Solar Charge Controller User manual

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